Horn for soldering the side seams of sheet-metal bodies.



Nb. 725,164. PATENTED APRLM; 1903. R. T. SMITH 60]). M. MONROE. HORNFOR'SOLDERING THE SIDE SEAMS OF SHEET METAL BODIES..

APPLICATION FILED JULY 31, 1901. RENEWED OUT. 21, 1902.

N0 MODEL I UNrrn ROBERT TYNES SMITH AND DAVID M. MONROE, OF BALTIMORE,MARY- LAND, ASSIGNORS TO AMERICAN CAN COMPANY, A CORPORATION OF NEWJERSEY.

HORN FOR SOLDERING THE SIDE SEAMS 0F SHEET-METAL BODIES.

SPECIFICATION forming part of Letters Patent No. 725,164, dated April14, 1903.

Application filed July 31,1901. Renewed October 21,1902. Serial No.128,201. (No model.)

To all whont it may concern;

Be it known that we, ROBERT TYNES SMITH and DAVID M. MONROE, citizens ofthe United States, residing at Baltimore, in the State of Maryland,haveinvented certain newand useful Improvements in Horns for SolderingtheSide Seams of Sheet-Metal Bodies,of which the following is aspecification.

This invention relates to an improved horn and mandrel for soldering theside seams of sheet-metal bodies, and the invention is especiallyadapted to be used in machines for forming the side seam and sizing thebody previous to applying the flux and solder thereto. In devices ofthis character it is of great importance that the soldering-horn be hot,whereas the mandrel to which it may be attached should be comparativelycool and not be affected materially by the heat from the horn, for thereason that a hot mandrel by expanding the sheet-metal body would interfere with the accurate sizing of such body.

This invention, therefore,has for one of its objects to provide aheat-insulating waterchamber for a soldering-machine of suchconstruction that while the soldering-horn is hot the heat thereof willnot be transmitted to the mandrel.

With this and other objects in view the invention is illustrated in theaccompanying drawings, in which Figure l is a side elevation of thesoldering-horn, which in the present instance is illustrated as beingattached to the end of a mandrel of a lock-seaming machine. Fig. 2 is avertical longitudinal section through the mandrel and the inner end ofthe horn. Fig. 3 is a similar section of the mandrel and horn on theline 3 3 of Fig. 4 looking in the direction shown by dart. Fig. 4 is avertical section through the inner end of the horn on the line 4 4: ofFig. 2. Fig. 5 is a vertical section through the horn on the line 5 5 ofFig. 2.

The invention consists in the combination, with the mandrel of acan-body forming or seaming machine, of a horn on which the seam issoldered and a heat-insulating chamber interposed between the mandreland born to prevent the heat from the soldering-horn being injuriouslycommunicated to the body forming or seaming mandrel. The heat-insulatoris preferably a hollow chamber through which water or other fluid may becirculated. I

Referring to the drawings by letters, A designates a mandrel of aseaminganachine, which may be of anydesired construction, but bypreference is provided with a central rod to, which may be reciprocatedby any suitable mechanism. Suitable means 6 is to be employed andoperated by the reciprocating rod a to advance the sheet-metal bodiesalong the mandrel and feed them onto the horn to be soldered.

The mechanism thus far mentioned is the subject-matter of a separateapplication and is therefore not to be claimed herein, but is merelyreferred to for the purpose of more clearly understanding the invention.

The soldering portion of the horn F is concavo-co11veX,'and the convexsurface is in alinement with the top surface of the mandrel. Awater-chamber to insulate the heat from the mandrel is interposedbetween the soldering portion of the horn and said mandrel. In thepresent instance a dry chamber f is provided to receive the end of thereciprocating rod ct. The water space or chamber g, which serves as aheat-insulator, is separated from said dry chamber by a partition 1?,and two wator-tubes h h pass entirely through the mandrel and the drychamber f and are screwed into the partition and open intothe-waterchamber. Besides serving for the circulation of water, thesetubes also serve as bolts to hold the soldering-hornin alinement withthe mandrel A. Alongitudinal groovej extends along the convex topsurface of the horn and receives the side seam of the sheet-metal bodyas it is moved along or advanced, and said groove serves to keep thesheet-metal body from turning as it is advanced. A gas-conducting tube Kextends longitudinally through the mandrel and also through the chambersand gin the horn, and said tube projects beneath the concave side ofsaid horn and is provided with a series of nipples or gas-burners Z,which when lighted direct the flames against the concaved bottom on ofthe horn and heat the same.

A bracket hat the [at present invention.

end of the horn serves to support the projecting end of the gas-tube K.

The operation is simple and as follows: The sheet-metal body is firstwrapped around the mandrel A and the seam is formed. The rod a is thenmoved forward by suitable mechanism, (not shown,) and the devices etransfer said body from the mandrel onto the horn'F. The groove j on thetop of the horn receives the seam of the sheet-metal body and preventsthe body from turning on the mandrel asit isadvanced in orderthattheseam may be presented upward to flux mechanism and solder mechanism,neither of which is shown, because they are not a part of the The end ofthe tube 72, which projects into the water-chamber g at the inner end ofthe mandrel, is connected to a water-supply, and the tube h is connectedto a waste or discharge pipe. Cold water is fed continuously by the tubeIt through the mandrel and also through the chamber fand partition 7}and is discharged into the Waterchamber g. The tube h extends backthrough the mandrel and conducts the water from said chamberg to a pointof discharge. It will thus be seen that water is continually passingthrough one tube into the chamber 9 and back through the other tube,thus completmg'the circulation. By this means it will be seen that acold-water space is formed be tween the soldering portion of the hornand the mandrel, and thereby the heat of the -horn is prevented frombeing conducted back to the mandrel.

By reference to Figs. 3 and 4 it will be seen that the tube h, whichfeeds the water into the chamber g, is near the bottom of said chamber,whereas the tube h, which discharges the water from said chamber, isnear the top of the chamber. By this construction it will be seen thatthe chamber will always be nearly fill'ed with cold water.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. In a seaming and soldering device for sheet-metal bodies thecombination of a mandrel on which the bodies are seamed; ahorn on whichthe seam is soldered; and a liquidchamber interposed between the mandreland horn.

2. In a seaming and soldering device for sheet-metal bodies thecombination of a mandrel on which the bodies are seamed; a horn inalinement with said mandrel on which the seam is to be soldered, saidhorn having a liquid-chamber and means for supplying said chamber withliquid and discharging it therefrom.

3. In a seaming and soldering device for sheet-metalbodies thecombination of a mandrel on which the bodies are seamed; a horn on whichthe seam is soldered; a liquid-chamber interposed between the mandreland horn; and a tube extending through the mandrel and in communicationwith said liquid-chamber for supplying liquid to said chamber.

4. In a seaming and soldering device for sheet-metal bodies thecombination of a mandrel on which the bodies are seamed; a horn at theend of said mandrel on which the seam is soldered, said horn beingprovided with a liquid-chamber near the end of the mandrel and a pluralnumber of tubes extending through the mandreland communicating with theliquid-chamber whereby liquid may be both fed into and discharged fromsaid chamber through the mandrel.

5. In a seaming and soldering device for sheet-metal bodies thecombination of a mandrel on which the bodies are seamed; a horn on whichthe seam is soldered; a liquid-chamber interposed between the mandreland horn; and a gas-tube extending through the mandrel and beneath thehorn.

6. In a seaming and soldering device for sheet-metal bodies thecombination of a mandrel on which the bodies are seamed; a horn on whichthe seams are soldered; a liquidchamber in the horn near said mandrel; afeeding-tube extending through the mandrel and entering theliquid-chamber near its bottom; and a discharge-tube opening in theliquid-chamber above the feeding-tube whereby liquid may befed into thechamber near the bottom and discharged near the top,

7. In a body forming or seaming and soldering device for sheet-metalbodies, the combination of a mandrel on which the bodies are formed orseamed, a horn on which the seam is soldered; and a heat-insulatordevice interposed between the mandrel and horn, substantially asspecified.

In testimony whereof we aflix our signatures in the presence of twowitnesses.

ROBERT TYNES SMITH. DAVID M. MONROE.

Witnesses:

CHARLES L. VIETSCH, FREDERICK S. STITT.

